On 20 Aug 2000 11:20:17 -0400, Warp wrote:
>
>  If #while-loops are indispensable, then so are #macros. Just think about
>recursive #macros. Although recursion is very similar to looping, it's
>easy to make a recursive #macro which functionality cannot be made with
>#while loops (because you would need a dynamic stack and there are no
>such things in povray (or at least not any efficient one)).

You can't do anything that requires a truly dynamic stack with a #macro,
either, as the max. recursion level is fixed.  Thus, anything you can do
with a #macro can be done with a #while loop and a few arrays.

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.

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